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We used to do a special handling of Linux kernel modules when stripping target binaries because there's some special precious data in modules that we must keep for them to properly operate. This is for example true for stack unwinding data etc. It turned out there're cases when our existing "strip --strip-unneeded" doesn't work well. For example this removes .debug_frame section used by Linux on ARC for stack unwinding, refer to [1] and [2] for more details. Now Linux kernel may strip modules as a part of "modules_install" target if INSTALL_MOD_STRIP=1 is passed in command line. And so we'll do allowing kernel decide how to strip modules in the best way. Still note as of today Linux kernel strips modules uniformly for all arches with "strip" command, so this commit alone doesn't solve mentioned problem but it opens a possibility to add later a patch to the kernel which will strip modules for ARC differently - and that's our plan for mainline kernel. [1] https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/issues/86 [2] http://lists.busybox.net/pipermail/buildroot/2016-September/172161.html Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Peter Korsgaard <peter@korsgaard.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Daniel Mentz <danielmentz@google.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches